China's current industrial automation is only a quarter of Japan's, equivalent to the level of Japan in the 1980s. With equipment upgrades and rising labor costs, there is still significant room for improvement in industrial automation. Yaskawa, a famous Japanese industrial robot manufacturer, said that the strong growth of overseas orders in 2010 was mainly caused by China's demand.

        The servo system is an important part of industrial automation. The servo system includes a servo driver and a servo motor and can precisely control the position, speed and angle of moving parts. There are many types of servo systems, and the basics that everyone mentioned are all AC servos. In addition, the control system is not the same, and the servo motor requirements are much higher than that of the frequency conversion, basically a synchronous motor, and the power is below 12KW. The servo system is an upgrade of medium and low voltage frequency conversion. The servo is used in the occasion with higher control precision, and the other uses medium and low voltage frequency conversion. So the servo and the frequency conversion overlap, but not exactly the same.

       Servo systems are more widely used in the field of precision control (machine tools, packaging, textiles etc), while medium and low voltage frequency conversion is widely used in heavy industries such as lifting, oil and gas exploration, petrochemical and other precision requirements. With the industrial upgrading, textile companies that used medium and low-voltage inverters have gradually transitioned to use servo systems.

        In order to increase the added value of textile and garment, the structure of the current textile fabric is more and more complicated. It is only necessary to feed the needle thread controlled by the low-voltage inverter, and the precision is not enough. Now it needs to be done by the servo device. The right end is the robot, and the motion of each joint is controlled by the servo system. Robots can replace the simple manual labor of people, and have wide applications in production lines such as automobiles and semiconductors.

The market size of the servo system has also been growing, with the growth rate at around 15% and the servo market in 2010 reaching 3 billion. According to the experience of developed countries, the servo market should be as large as the medium and low voltage frequency conversion. At present, China's medium and low voltage inverter market is 15 billion per year, and the servo is only 3 billion. From this point of view, servo has a lot of growth potential.